caa a22 4500 606220208 CHVBK 20210128101122.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11104-015-2482-9 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2482-9 Rhizosphere-mediated effects of the invasive grass Bromus tectorum L. and native Elymus elymoides on nitrogen cycling in Great Basin Desert soils [Elektronische Daten] [Amy Concilio, Thiago Vargas, Weixin Cheng] Background and aims: There is evidence that the invasive grass Bromus tectorum can affect soil nitrogen (N) cycling, possibly leading to a positive plant-soil feedback. Rhizosphere priming of N mineralization could provide a mechanistic explanation for such a feedback. Methods: We conducted a greenhouse study to isolate rhizosphere effects on N cycling by the invasive annual grass, Bromus tectorum L., and the native perennial grass, Elymus elymoides (Raf.) Swezey, in invaded and uninvaded soils. We compared the rhizosphere priming effect (RPE) on N mineralization by species and the distribution of N in various pools by planting treatment and soil type. Results: B. tectorum had a negative RPE (−23 and −22% in invaded and uninvaded soils, respectively), while E. elymoides had no significant RPE. B. tectorum was more competitive over E. elymoides in invaded compared to uninvaded soil. Conclusions: B. tectorum had a negative effect on soil N availability via root-mediated processes, even though its growth and competitiveness increased in invaded soils. Positive plant-soil feedback effects of B. tectorum may be mediated by aboveground inputs rather than belowground and/or depend on site-specific conditions. Springer International Publishing Switzerland, 2015 Belowground processes nationallicence Cheatgrass nationallicence Downy brome nationallicence Elymus elymoides nationallicence Feedback effects nationallicence Invasive species nationallicence N cycling nationallicence Rhizosphere priming effect nationallicence N : Nitrogen nationallicence RPE : Rhizosphere priming effect nationallicence Concilio Amy Institute of Arctic and Alpine Research, University of Colorado, 1560 30th St, 80303, Boulder, CO, USA aut Vargas Thiago Departamento de Ciências Agrárias, Universidade Tecnológica Federal do Paraná, 85503-390, Pato Branco, PR, Brazil aut Cheng Weixin Department of Environmental Studies, University of California, 95064, Santa Cruz, CA, USA aut Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 245-257 0032-079X 393:1-2<245 2015 393 11104 https://doi.org/10.1007/s11104-015-2482-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2482-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Concilio Amy Institute of Arctic and Alpine Research, University of Colorado, 1560 30th St, 80303, Boulder, CO, USA aut NATIONALLICENCE 700 1- Vargas Thiago Departamento de Ciências Agrárias, Universidade Tecnológica Federal do Paraná, 85503-390, Pato Branco, PR, Brazil aut NATIONALLICENCE 700 1- Cheng Weixin Department of Environmental Studies, University of California, 95064, Santa Cruz, CA, USA aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 245-257 0032-079X 393:1-2<245 2015 393 11104